- I don't recommend putting much BTC on hosted wallets / exchanges generally. Exactly how the above risks would be translated to these services will vary depending on how each service handles deposits, reorgs, and double-spends.
Actually, I believe that for newbies (like me), keeping the BTC on a
serious exchange (bittrex,
poloniex) is a smart move. Let them do that heavy lifting and just wait that the situation becomes clearer.